ORIGINAL RESEARCH
Cr (VI) Removal from Aqueous Solution Using
Starch and Sodium Carboxymethyl
Cellulose-Coated Fe and Fe /Ni Nanoparticles
| 1 | School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China |
| 2 | Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China |
| 3 | Hubei Key Laboratory of Regional Development and Environmental Response, Hubei University, Wuhan, 430062, China |
CORRESPONDING AUTHOR
Bin Ji
Wuhan University of Sicence and Technology, Wuhan University of Sicence and Technology, 430065 Wuhan, China
Wuhan University of Sicence and Technology, Wuhan University of Sicence and Technology, 430065 Wuhan, China
Submission date: 2017-11-27
Final revision date: 2018-01-08
Acceptance date: 2018-01-23
Online publication date: 2018-06-29
Publication date: 2018-07-09
Pol. J. Environ. Stud. 2018;27(6):2785–2792
KEYWORDS
nanoscale zero-valent ironsodium carboxymethyl cellulosestarchCr (VI) removalfirst-order kinetic model
TOPICS
ABSTRACT
Starch and sodium carboxymethyl cellulose-coated Fe and Fe /Ni nanoparticles were synthesized
and their Cr (VI) removal capabilities were evaluated and compared. We found that starch and sodium
carboxymethyl cellulose-coated nanoscale zero-valent iron-nickel (SS-nZVI-Ni) showed the better Cr
(VI) removal performance. The effect of acidic conditions on Cr(VI) removal by SS-Nzvi-Ni revealed
that the Cr (VI) removal efficiency by SS-nZVI-Ni reached the maximum of 95.70% at pH = 2. The effect
of different initial Cr (VI) concentrations showed that SS-nZVI-Ni performed well at a high Cr(VI)
concentration. Langmuir-Hinshelwood first-order kinetic model could describe the reduction process
well. SEM images revealed that SS-nZVI-Ni had a large surface area, which discarded the problem of
aggregation. XRD and XPS analysis of SS-nZVI-Ni showed that SS-nZVI-Ni and Cr (III) formed an alloy
on the surface of SS-nZVI-Ni after the reaction. The study provides an option for practical application of
SS-nZVI-Ni in Cr (VI) removal.
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